Static voltage stability margin evaluation for a DC distribution network with DC electric springs
The rapid growth of DC loads in distribution networks positions DC distribution networks as a promising solution for future power systems. However, the operational limits of power electronic devices in DC distribution networks may pose static voltage stability challenges. Accurate evaluation of the...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-04-01
|
| Series: | International Journal of Electrical Power & Energy Systems |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142061525000547 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1823864512296517632 |
|---|---|
| author | Xiaolong Xu Qianggang Wang Jianquan Liao Yuan Chi Tao Huang Niancheng Zhou Yiyao Zhou Xuefei Zhang |
| author_facet | Xiaolong Xu Qianggang Wang Jianquan Liao Yuan Chi Tao Huang Niancheng Zhou Yiyao Zhou Xuefei Zhang |
| author_sort | Xiaolong Xu |
| collection | DOAJ |
| description | The rapid growth of DC loads in distribution networks positions DC distribution networks as a promising solution for future power systems. However, the operational limits of power electronic devices in DC distribution networks may pose static voltage stability challenges. Accurate evaluation of the static voltage stability margin is crucial to prevent such issues. As a flexible resource, the DC electric spring would significantly impact the static voltage stability margin of a DC distribution network. This paper proposes a static voltage stability margin evaluation method for DC distribution networks with DC electric springs, based on continuation power flow. Initially, the relationship between the outputs of a DC electric spring and load power is analyzed in a simplified circuit, leading to the derivation of bus type conversion logic for buses with DC electric springs, considering their output limits. Using this logic, the proposed method determines the bus type by evaluating the outputs of DC electric springs, identifies any violations, and subsequently applies corrections to the Jacobian matrix. The evaluation also accounts for the current limits of power supply converters. The time-domain simulation results show high consistency with the proposed method, especially in calculating the load power that drives the device outputs to their limits, thereby validating the effectiveness of the approach. |
| format | Article |
| id | doaj-art-9de2203ef61c4ca4b88b1a8436c0e16c |
| institution | Kabale University |
| issn | 0142-0615 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Electrical Power & Energy Systems |
| spelling | doaj-art-9de2203ef61c4ca4b88b1a8436c0e16c2025-02-09T04:59:35ZengElsevierInternational Journal of Electrical Power & Energy Systems0142-06152025-04-01165110503Static voltage stability margin evaluation for a DC distribution network with DC electric springsXiaolong Xu0Qianggang Wang1Jianquan Liao2Yuan Chi3Tao Huang4Niancheng Zhou5Yiyao Zhou6Xuefei Zhang7State Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044 ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044 China; Corresponding author.College of Electrical Engineer, Sichuan University, Chengdu 610065 ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044 ChinaDepartment of Energy, Politecnico di Torino, Torino 10129 ItalyState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044 ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044 ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing 400044 ChinaThe rapid growth of DC loads in distribution networks positions DC distribution networks as a promising solution for future power systems. However, the operational limits of power electronic devices in DC distribution networks may pose static voltage stability challenges. Accurate evaluation of the static voltage stability margin is crucial to prevent such issues. As a flexible resource, the DC electric spring would significantly impact the static voltage stability margin of a DC distribution network. This paper proposes a static voltage stability margin evaluation method for DC distribution networks with DC electric springs, based on continuation power flow. Initially, the relationship between the outputs of a DC electric spring and load power is analyzed in a simplified circuit, leading to the derivation of bus type conversion logic for buses with DC electric springs, considering their output limits. Using this logic, the proposed method determines the bus type by evaluating the outputs of DC electric springs, identifies any violations, and subsequently applies corrections to the Jacobian matrix. The evaluation also accounts for the current limits of power supply converters. The time-domain simulation results show high consistency with the proposed method, especially in calculating the load power that drives the device outputs to their limits, thereby validating the effectiveness of the approach.http://www.sciencedirect.com/science/article/pii/S0142061525000547DC electric springsStatic voltage stability marginDC distribution networkContinuation power flow |
| spellingShingle | Xiaolong Xu Qianggang Wang Jianquan Liao Yuan Chi Tao Huang Niancheng Zhou Yiyao Zhou Xuefei Zhang Static voltage stability margin evaluation for a DC distribution network with DC electric springs International Journal of Electrical Power & Energy Systems DC electric springs Static voltage stability margin DC distribution network Continuation power flow |
| title | Static voltage stability margin evaluation for a DC distribution network with DC electric springs |
| title_full | Static voltage stability margin evaluation for a DC distribution network with DC electric springs |
| title_fullStr | Static voltage stability margin evaluation for a DC distribution network with DC electric springs |
| title_full_unstemmed | Static voltage stability margin evaluation for a DC distribution network with DC electric springs |
| title_short | Static voltage stability margin evaluation for a DC distribution network with DC electric springs |
| title_sort | static voltage stability margin evaluation for a dc distribution network with dc electric springs |
| topic | DC electric springs Static voltage stability margin DC distribution network Continuation power flow |
| url | http://www.sciencedirect.com/science/article/pii/S0142061525000547 |
| work_keys_str_mv | AT xiaolongxu staticvoltagestabilitymarginevaluationforadcdistributionnetworkwithdcelectricsprings AT qianggangwang staticvoltagestabilitymarginevaluationforadcdistributionnetworkwithdcelectricsprings AT jianquanliao staticvoltagestabilitymarginevaluationforadcdistributionnetworkwithdcelectricsprings AT yuanchi staticvoltagestabilitymarginevaluationforadcdistributionnetworkwithdcelectricsprings AT taohuang staticvoltagestabilitymarginevaluationforadcdistributionnetworkwithdcelectricsprings AT nianchengzhou staticvoltagestabilitymarginevaluationforadcdistributionnetworkwithdcelectricsprings AT yiyaozhou staticvoltagestabilitymarginevaluationforadcdistributionnetworkwithdcelectricsprings AT xuefeizhang staticvoltagestabilitymarginevaluationforadcdistributionnetworkwithdcelectricsprings |